USC.edu
Are You a Patient?

Mark Shiroishi, MD

Clinical Assistant Professor of Radiology (Part-Time)

Image of Mark Shiroishi, MD
Is this your profile? Click to edit
Phone +1 323 865 9914
Email [email protected]
CTSI Profile

Publications

  • Associations Between Tumor Characteristics, Postoperative Complications, and Early Versus Late Discharge After Endoscopic Endonasal Pituitary Adenoma Resection. Oper Neurosurg. 2026 Feb 01; 30(2):193-200.. View in PubMed
  • Automatic detection of arterial input function for brain DCE-MRI in multi-site cohorts. Magn Reson Med. 2025 Dec; 94(6):2732-2744.. View in PubMed
  • Prognostic value of arterial spin-labeling perfusion in anoxic brain injury: A retrospective cohort study. World J Radiol. 2025 Aug 28; 17(8):111065.. View in PubMed
  • Predictive factors for early-onset hyponatremia following endoscopic transsphenoidal surgery for nonfunctioning pituitary adenomas. J Neurosurg. 2025 Aug 01; 143(2):406-412.. View in PubMed
  • A contemporary, multiinstitutional analysis of transcription factor lineage in pituitary adenomas: comparative study of neuroimaging, histopathology, and clinical outcomes. J Neurosurg. 2025 Jul 01; 143(1):146-154.. View in PubMed
  • Association between pituitary adenoma consistency, resection techniques, and patient outcomes: a single-institution experience. J Neurosurg. 2025 Jun 01; 142(6):1674-1681.. View in PubMed
  • Interleaved flow-sensitive dephasing (iFSD): Toward enhanced blood flow suppression and preserved T1 weighting and overall signals in 3D TSE-based neuroimaging. Magn Reson Med. 2025 May; 93(5):1911-1923.. View in PubMed
  • Association between meningioma consistency and surgical outcomes. J Neurosurg. 2025 May 01; 142(5):1331-1337.. View in PubMed
  • Pearls and Pitfalls of T1-Weighted Neuroimaging: A Primer for the Clinical Radiologist. Acad Radiol. 2025 May; 32(5):2940-2952.. View in PubMed
  • The role of plasma metagenomic sequencing in identification of Balamuthia mandrillaris encephalitis. Acta Neuropathol Commun. 2025 03 13; 13(1):60.. View in PubMed
  • Multisite Benchmark Study for Standardized Relative CBV in Untreated Brain Metastases Using the DSC-MRI Consensus Acquisition Protocol. AJNR Am J Neuroradiol. 2025 Mar 04; 46(3):529-535.. View in PubMed
  • Reply. AJNR Am J Neuroradiol. 2025 Jan 08; 46(1):221-222.. View in PubMed
  • Successful Multimodal Management of an Aggressive Functional Gonadotropic Pituitary Macroadenoma. AACE Clin Case Rep. 2025 Jan-Feb; 11(1):14-17.. View in PubMed
  • A Neuroradiologist’s Guide to Operationalizing the Response Assessment in Neuro-Oncology (RANO) Criteria Version 2.0 for Gliomas in Adults. AJNR Am J Neuroradiol. 2024 Dec 09; 45(12):1846-1856.. View in PubMed
  • The Brain Tumor Segmentation – Metastases (BraTS-METS) Challenge 2023: Brain Metastasis Segmentation on Pre-treatment MRI. ArXiv. 2024 Dec 09.. View in PubMed
  • The QIBA Profile for Dynamic Susceptibility Contrast MRI Quantitative Imaging Biomarkers for Assessing Gliomas. Radiology. 2024 Dec; 313(3):e232555.. View in PubMed
  • Spontaneous regression of Rathke’s cleft cysts with conservative management: patient series. J Neurosurg Case Lessons. 2024 Sep 23; 8(13).. View in PubMed
  • Endoscopic Endonasal Transsphenoidal Resection of Pituitary Adenomas in Patients Presenting With Monocular Blindness. Oper Neurosurg. 2024 Sep 01; 27(3):265-278.. View in PubMed
  • Multi-modal fusion and feature enhancement U-Net coupling with stem cell niches proximity estimation for voxel-wise GBM recurrence prediction. Phys Med Biol. 2024 Jul 25; 69(15).. View in PubMed
  • Structural and practical identifiability of contrast transport models for DCE-MRI. PLoS Comput Biol. 2024 May; 20(5):e1012106.. View in PubMed
  • Clinical Implications of Pituitary Adenomas Exhibiting Dual Transcription Factor Staining: A Case Series of 27 Patients. World Neurosurg. 2024 02; 182:e62-e66.. View in PubMed
  • Structural and practical identifiability of contrast transport models for DCE-MRI. bioRxiv. 2023 Dec 19.. View in PubMed
  • Breast-to-brain metastasis is exacerbated with chemotherapy through blood-cerebrospinal fluid barrier and induces Alzheimer’s-like pathology. J Neurosci Res. 2023 12; 101(12):1900-1913.. View in PubMed
  • Tumor characteristics guiding selection of channel-based versus open microscopic approaches for resection of atrial intraventricular meningiomas: patient series. J Neurosurg Case Lessons. 2023 Nov 20; 6(21).. View in PubMed
  • Association of Relative Cerebral Blood Volume from Dynamic Susceptibility Contrast-Enhanced Perfusion MR with HER2 Status in Breast Cancer Brain Metastases. Acad Radiol. 2023 09; 30(9):1816-1822.. View in PubMed
  • Endoscopic endonasal approach for MRI-Negative Cushing’s microadenoma. Neurosurg Focus Video. 2023 Jul; 9(1):V5.. View in PubMed
  • Validation of Myc-Associated Protein X (MAX) regulation in growth hormone secreting and nonfunctional pituitary adenoma. PLoS One. 2023; 18(4):e0284949.. View in PubMed
  • MR multitasking-based dynamic imaging for cerebrovascular evaluation (MT-DICE): Simultaneous quantification of permeability and leakage-insensitive perfusion by dynamic T1/T2* mapping. Magn Reson Med. 2023 Jan; 89(1):161-176.. View in PubMed
  • A cross-sectional study to test equivalence of low- versus intermediate-flip angle dynamic susceptibility contrast MRI measures of relative cerebral blood volume in patients with high-grade gliomas at 1.5 Tesla field strength. Front Oncol. 2023; 13:1156843.. View in PubMed
  • Association between socioeconomic status and presenting characteristics and extent of disease in patients with surgically resected nonfunctioning pituitary adenoma. J Neurosurg. 2022 12 01; 137(6):1699-1706.. View in PubMed
  • Current issues and controversies surrounding spine imaging and the significance of spinal subdural hemorrhage in suspected abusive head trauma. Pediatr Radiol. 2022 12; 52(13):2445-2449.. View in PubMed
  • 5-Aminolevulinic acid-enhanced fluorescence-guided treatment of high-grade glioma using angled endoscopic blue light visualization: technical case series with preliminary follow-up. J Neurosurg. 2022 Nov 01; 137(5):1378-1386.. View in PubMed
  • Growth hormone secreting pituitary adenomas show distinct extrasellar extension patterns compared to nonfunctional pituitary adenomas. Pituitary. 2022 Jun; 25(3):480-485.. View in PubMed
  • Chronic Stroke Sensorimotor Impairment Is Related to Smaller Hippocampal Volumes: An ENIGMA Analysis. J Am Heart Assoc. 2022 05 17; 11(10):e025109.. View in PubMed
  • Minocycline decreases blood-brain barrier permeability following aneurysmal subarachnoid hemorrhage: a randomized, double-blind, controlled trial. J Neurosurg. 2022 May 01; 136(5):1251-1259.. View in PubMed
  • Voxelwise Prediction of Recurrent High-Grade Glioma via Proximity Estimation-Coupled Multidimensional Support Vector Machine. Int J Radiat Oncol Biol Phys. 2022 04 01; 112(5):1279-1287.. View in PubMed
  • Treatment strategies for giant pituitary adenomas in the era of endoscopic transsphenoidal surgery: a multicenter series. J Neurosurg. 2022 Mar 01; 136(3):776-785.. View in PubMed
  • Ultra-high field 7 T MRI localizes regional brain volume recovery following corticotroph adenoma resection and hormonal remission in Cushing’s disease: A case series. Surg Neurol Int. 2022; 13:239.. View in PubMed
  • The ENIGMA Stroke Recovery Working Group: Big data neuroimaging to study brain-behavior relationships after stroke. Hum Brain Mapp. 2022 01; 43(1):129-148.. View in PubMed
  • Silent corticotroph pituitary adenomas: clinical characteristics, long-term outcomes, and management of disease recurrence. J Neurosurg. 2021 12 01; 135(6):1706-1713.. View in PubMed
  • Bilateral arachnoid cyst-associated subdural fluid collections in an infant following TBI. J Forensic Leg Med. 2021 Jul; 81:102189.. View in PubMed
  • Development and clinical validation of a grading system for pituitary adenoma consistency. J Neurosurg. 2021 06 01; 134(6):1800-1807.. View in PubMed
  • Safety and Effectiveness of the Direct Endoscopic Endonasal Approach for Primary Sellar Pathology: A Contemporary Case Series of More Than 400 Patients. World Neurosurg. 2021 04; 148:e536-e546.. View in PubMed
  • Comparative preoperative characteristics and postoperative outcomes at a private versus a safety-net hospital following endoscopic endonasal transsphenoidal resection of pituitary adenomas. J Neurosurg. 2021 03 01; 134(3):742-749.. View in PubMed
  • Smaller spared subcortical nuclei are associated with worse post-stroke sensorimotor outcomes in 28 cohorts worldwide. Brain Commun. 2021; 3(4):fcab254.. View in PubMed
  • Improved Glioma Grading Using Deep Convolutional Neural Networks. AJNR Am J Neuroradiol. 2021 01; 42(2):233-239.. View in PubMed
  • Repeatability of tumor perfusion kinetics from dynamic contrast-enhanced MRI in glioblastoma. Neurooncol Adv. 2021 Jan-Dec; 3(1):vdab174.. View in PubMed
  • Ultra-high field magnetic resonance imaging for localization of corticotropin-secreting pituitary adenomas. Neuroradiology. 2020 Aug; 62(8):1051-1054.. View in PubMed
  • Impact of tumor characteristics and pre- and postoperative hormone levels on hormonal remission following endoscopic transsphenoidal surgery in patients with acromegaly. Neurosurg Focus. 2020 06; 48(6):E10.. View in PubMed
  • Hemorrhagic Presentation of Rathke Cleft Cysts: A Surgical Case Series. Oper Neurosurg (Hagerstown). 2020 05 01; 18(5):470-479.. View in PubMed
  • Pituitary Apoplexy Case Series: Outcomes After Endoscopic Endonasal Transsphenoidal Surgery at a Single Tertiary Center. World Neurosurg. 2020 05; 137:e366-e372.. View in PubMed
  • Advanced ADC Histogram, Perfusion, and Permeability Metrics Show an Association with Survival and Pseudoprogression in Newly Diagnosed Diffuse Intrinsic Pontine Glioma: A Report from the Pediatric Brain Tumor Consortium. AJNR Am J Neuroradiol. 2020 04; 41(4):718-724.. View in PubMed
  • ENIGMA and global neuroscience: A decade of large-scale studies of the brain in health and disease across more than 40 countries. Transl Psychiatry. 2020 03 20; 10(1):100.. View in PubMed
  • Calcified Prolactinoma of the Pituitary Gland: Illustrative Case Reports Highlighting Medical versus Surgical Intervention. J Neurol Surg B Skull Base. 2020 Feb; 81(1):22-29.. View in PubMed
  • Posterior Reversible Encephalopathy Syndrome (PRES): Pathophysiology and Neuro-Imaging. Front Neurol. 2020; 11:463.. View in PubMed
  • Differential Clinical Presentation, Intraoperative Management Strategies, and Surgical Outcomes After Endoscopic Endonasal Treatment of Cystic Sellar Masses. World Neurosurg. 2020 Jan; 133:e241-e251.. View in PubMed
  • Quantitative imaging biomarkers alliance (QIBA) recommendations for improved precision of DWI and DCE-MRI derived biomarkers in multicenter oncology trials. J Magn Reson Imaging. 2019 06; 49(7):e101-e121.. View in PubMed
  • Headache and Brain Tumor. Neuroimaging Clin N Am. 2019 May; 29(2):291-300.. View in PubMed
  • Value of pituitary gland MRI at 7 T in Cushing’s disease and relationship to inferior petrosal sinus sampling: case report. J Neurosurg. 2019 02 01; 130(2):347-351.. View in PubMed
  • Permeability imaging as a predictor of delayed cerebral ischemia after aneurysmal subarachnoid hemorrhage. J Cereb Blood Flow Metab. 2018 06; 38(6):973-979.. View in PubMed
  • Lymphomatosis cerebri: a rare variant of primary central nervous system lymphoma and MR imaging features. Cancer Imaging. 2017 Oct 05; 17(1):26.. View in PubMed
  • Brain cortical structural differences between non-central nervous system cancer patients treated with and without chemotherapy compared to non-cancer controls: a cross-sectional pilot MRI study using clinically-indicated scans. Proc SPIE Int Soc Opt Eng. 2017 Oct; 10572.. View in PubMed
  • A pilot study of pre-operative motor dysfunction from gliomas in the region of corticospinal tract: Evaluation with diffusion tensor imaging. PLoS One. 2017; 12(8):e0182795.. View in PubMed
  • Mental Illness Is Not Associated with Adherence to Colorectal Cancer Screening: Results from the California Health Interview Survey. Dig Dis Sci. 2017 01; 62(1):224-234.. View in PubMed
  • Dynamic Susceptibility Contrast MR Imaging in Glioma: Review of Current Clinical Practice. Magn Reson Imaging Clin N Am. 2016 Nov; 24(4):649-670.. View in PubMed
  • Atypical central neurocytoma with metastatic craniospinal dissemination: a case report. Clin Imaging. 2016 Nov – Dec; 40(6):1108-1111.. View in PubMed
  • High-resolution whole-brain DCE-MRI using constrained reconstruction: Prospective clinical evaluation in brain tumor patients. Med Phys. 2016 May; 43(5):2013.. View in PubMed
  • Physiologic MRI for assessment of response to therapy and prognosis in glioblastoma. Neuro Oncol. 2016 Apr; 18(4):467-78.. View in PubMed
  • Predicting Meningioma Consistency on Preoperative Neuroimaging Studies. Neurosurg Clin N Am. 2016 Apr; 27(2):145-54.. View in PubMed
  • Advanced Imaging of Intracranial Meningiomas. Neurosurg Clin N Am. 2016 Apr; 27(2):137-43.. View in PubMed
  • The use of inhaled antibiotic therapy in the treatment of ventilator-associated pneumonia and tracheobronchitis: a systematic review. BMC Pulm Med. 2016 Mar 08; 16:40.. View in PubMed
  • Versatile utilization of real-time intraoperative contrast-enhanced ultrasound in cranial neurosurgery: technical note and retrospective case series. Neurosurg Focus. 2016 Mar; 40(3):E6.. View in PubMed
  • Design and development of an ethnically-diverse imaging informatics-based eFolder system for multiple sclerosis patients. Comput Med Imaging Graph. 2015 Dec; 46 Pt 2:257-68.. View in PubMed
  • Combined MRI and MRS improves pre-therapeutic diagnoses of pediatric brain tumors over MRI alone. Neuroradiology. 2015 Sep; 57(9):951-6.. View in PubMed
  • Imaging of the Posttherapeutic Brain. Top Magn Reson Imaging. 2015 Jun; 24(3):147-54.. View in PubMed
  • ASFNR recommendations for clinical performance of MR dynamic susceptibility contrast perfusion imaging of the brain. AJNR Am J Neuroradiol. 2015 Jun; 36(6):E41-51.. View in PubMed
  • Imaging of occlusive thrombi in acute ischemic stroke. Int J Stroke. 2015 Apr; 10(3):298-305.. View in PubMed
  • Principles of T2 *-weighted dynamic susceptibility contrast MRI technique in brain tumor imaging. J Magn Reson Imaging. 2015 Feb; 41(2):296-313.. View in PubMed
  • Diffusion restriction in a non-enhancing metastatic brain tumor treated with bevacizumab – recurrent tumor or atypical necrosis? Clin Imaging. 2014 Sep-Oct; 38(5):724-6.. View in PubMed
  • Malignant transformation of DNETs: a case report and literature review. Neuroreport. 2014 Aug 20; 25(12):894-9.. View in PubMed
  • Multimodal magnetic resonance imaging evaluation of primary brain tumors. Semin Oncol. 2014 Aug; 41(4):478-495.. View in PubMed
  • Clinical applications of diffusion tensor imaging. World Neurosurg. 2014 Jul-Aug; 82(1-2):96-109.. View in PubMed
  • Image coregistration: quantitative processing framework for the assessment of brain lesions. J Digit Imaging. 2014 Jun; 27(3):369-79.. View in PubMed
  • Concurrent intracranial and spinal subdural hematoma in a teenage athlete: a case report of this rare entity. Case Rep Radiol. 2014; 2014:143408.. View in PubMed
  • A pilot genome-scale profiling of DNA methylation in sporadic pituitary macroadenomas: association with tumor invasion and histopathological subtype. PLoS One. 2014; 9(4):e96178.. View in PubMed
  • Perfusion MRI: the five most frequently asked clinical questions. AJR Am J Roentgenol. 2013 Sep; 201(3):W495-510.. View in PubMed
  • Brain tumors: a multimodality approach with diffusion-weighted imaging, diffusion tensor imaging, magnetic resonance spectroscopy, dynamic susceptibility contrast and dynamic contrast-enhanced magnetic resonance imaging. Magn Reson Imaging Clin N Am. 2013 May; 21(2):199-239.. View in PubMed
  • Posttreatment evaluation of central nervous system gliomas. Magn Reson Imaging Clin N Am. 2013 May; 21(2):241-68.. View in PubMed
  • Perfusion MRI: the five most frequently asked technical questions. AJR Am J Roentgenol. 2013 Jan; 200(1):24-34.. View in PubMed
  • Advanced techniques using contrast media in neuroimaging. Magn Reson Imaging Clin N Am. 2012 Nov; 20(4):699-713.. View in PubMed
  • Imaging of neurocysticercosis. Neuroimaging Clin N Am. 2012 Nov; 22(4):659-76.. View in PubMed
  • Medicolegal hazards: potential pitfalls for neuroimagers. Neuroimaging Clin N Am. 2012 Aug; 22(3):527-38.. View in PubMed
  • Perfusion and permeability MR imaging of gliomas. Technol Cancer Res Treat. 2011 Feb; 10(1):59-71.. View in PubMed
  • Contralateral hemimicrencephaly in neonatal hemimegalencephaly. Pediatr Radiol. 2010 Nov; 40(11):1826-30.. View in PubMed
  • Differential changes in deep and cortical gray matters of patients with multiple sclerosis: a quantitative magnetic resonance imaging study. J Comput Assist Tomogr. 2010 May-Jun; 34(3):431-6.. View in PubMed
  • Multiple sclerosis: hyperintense lesions in the brain on T1-weighted MR images assessed by diffusion tensor imaging. J Magn Reson Imaging. 2010 Apr; 31(4):789-95.. View in PubMed
  • Multiphase evaluation of myocardial bridging with dual-source computed tomography. Acta Radiol. 2009 Sep; 50(7):775-80.. View in PubMed
  • Target therapy using a small molecule inhibitor against angiogenic receptors in pancreatic cancer. Neoplasia. 2007 Feb; 9(2):119-27.. View in PubMed
  • Myocardial protection: the rebirth of potassium-based cardioplegia. Tex Heart Inst J. 1999; 26(1):71-86.. View in PubMed
  • Retrograde transvenous neuroperfusion: a back door treatment for stroke. Stroke. 1998 Sep; 29(9):1912-6.. View in PubMed
  • A pilot study on the ability of retrograde transvenous neuroperfusion to rescue baboon brain with severe ischemia. J Stroke Cerebrovasc Dis. 1997 Apr-May; 6(4):210-6.. View in PubMed

Similar People