3D dynamic pituitary MR imaging with CAIPIRINHA: Initial experience and comparison with 2D dynamic MR imaging

Fushimi, Yasutaka; Okada, Tomohisa; Kanagaki, Mitsunori; Yamamoto, Akira; Kanda, Yoichi; Sakamoto, Ryo; Hojo, Masato; Takahashi, Jun; Miyamoto, Susumu; Togashi, Kaori

doi:10.1016/j.ejrad.2014.06.018

Cited by 8 publications

(5 citation statements)

References 24 publications

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“…Dynamic MRI is usually performed with a fast SE coronal section, but if the microadenoma is located at the anterior or posterior end of the anterior lobe, the partial volume effect may make the diagnosis difficult. In such cases, three-dimensional (3D) dynamic MRI [39][40][41][42] or dynamic MRI with simultaneous acquisition of coronal and sagittal images [43] may be useful.…”

Section: Routine Mrimentioning

confidence: 99%

Imaging of pituitary tumors: an update with the 5th WHO Classifications—part 1. Pituitary neuroendocrine tumor (PitNET)/pituitary adenoma

Tsukamoto¹,

Miki²

2023

Jpn J Radiol

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The pituitary gland is the body’s master gland of the endocrine glands. Although it is a small organ, many types of tumors can develop within it. The recently revised fifth edition of the World Health Organization (WHO) classifications (2021 World Health Organization Classification of Central Nervous System Tumors and 2022 World Health Organization Classification of Endocrine and Neuroendocrine Tumors) revealed significant changes to the classification of pituitary adenomas, the most common type of pituitary gland tumor. This change categorized pituitary adenomas as neuroendocrine tumors and proposed the name to be revised to pituitary neuroendocrine tumor (PitNET). The International Classification of Diseases for Oncology behavior code for this tumor was previously “0” for benign tumor. In contrast, the fifth edition WHO classification has changed this code to “3” for primary malignant tumors as same to neuroendocrine tumor in other organs. Because the WHO classification made an important and significant change in the fundamental concept of the disease, in this paper, we will discuss the imaging diagnosis (magnetic resonance imaging, computed tomography, and positron emission tomography) of PitNET/pituitary adenoma in detail, considering these revisions as per the latest version of the WHO classification.

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Section: Routine Mrimentioning

confidence: 99%

Imaging of pituitary tumors: an update with the 5th WHO Classifications—part 1. Pituitary neuroendocrine tumor (PitNET)/pituitary adenoma

Tsukamoto¹,

Miki²

2023

Jpn J Radiol

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“…Secondly, the number of focal lesions in our present patient cohort was not sufficient to perform a quality assessment for conspicuity evaluation of focal pathologies. Previous studies on CAIPIRINHA demonstrated robust pancreatic imaging and better delineation of organ outlines with CAIPIRINHA, as compared to GRAPPA-accelerated 2D FLASH imaging [ 12 ], better identification of stalk and posterior lobe of the pituitary gland with dynamic CAIPIRINHA-accelerated scans [ 15 ], and better vessel clarity, lesion conspicuity, and edge sharpness in liver scans of adult patients [ 6 ]. From our clinical experience we know that HASTE imaging with its fast “one-slice-per-shot” acquisition in combination with breathing-related motion in the upper abdomen can lead to incomplete volume coverage, so that, for example, small liver lesion may be missed.…”

Section: Discussionmentioning

confidence: 99%

Fast MR Imaging of the Paediatric Abdomen with CAIPIRINHA-Accelerated T1w 3D FLASH and with High-Resolution T2w HASTE: A Study on Image Quality

Winkler

Pabst

et al. 2015

Gastroenterology Research and Practice

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The aim of this study was to explore the applicability of fast MR techniques to routine paediatric abdominopelvic MRI at 1.5 Tesla. “Controlled Aliasing in Parallel Imaging Results in Higher Acceleration-” (CAIPIRINHA-) accelerated contrast-enhanced-T1w 3D FLASH imaging was compared to standard T1w 2D FLASH imaging with breath-holding in 40 paediatric patients and to respiratory-triggered T1w TSE imaging in 10 sedated young children. In 20 nonsedated patients, we compared T2w TIRM to fat-saturated T2w HASTE imaging. Two observers performed an independent and blinded assessment of overall image quality. Acquisition time was reduced by the factor of 15 with CAIPIRINHA-accelerated T1w FLASH and by 7 with T2w HASTE. With CAIPIRINHA and with HASTE, there were significantly less motion artefacts in nonsedated patients. In sedated patients, respiratory-triggered T1w imaging in general showed better image quality. However, satisfactory image quality was achieved with CAIPIRINHA in two sedated patients where respiratory triggering failed. In summary, fast scanning with CAIPIRINHA and HASTE presents a reliable high quality alternative to standard sequences in paediatric abdominal MRI. Paediatric patients, in particular, benefit greatly from fast image acquisition with less breath-hold cycles or shorter sedation.

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“…Advanced techniques that enable volumetric dynamic imaging with thin slices are becoming more available (43,35). These approaches may prove to be alternate approaches that can minimize partial volume averaging, and decrease ambiguity in determining contrast enhancement.…”

Section: Discussionmentioning

confidence: 99%

Comparison of 3D Volumetric Subtraction Technique and 2D Dynamic Contrast Enhancement Technique in the Evaluation of Contrast Enhancement for Diagnosing Cushing's Disease

Park

Kim

Lee

et al. 2018

Investig Magn Reson Imaging

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3D dynamic pituitary MR imaging with CAIPIRINHA: Initial experience and comparison with 2D dynamic MR imaging

Abstract: 3D dynamic pituitary MR provided better identification and higher normalized values of pituitary posterior lobe and stalk than 2D.

Cited by 8 publications

References 24 publications

Imaging of pituitary tumors: an update with the 5th WHO Classifications—part 1. Pituitary neuroendocrine tumor (PitNET)/pituitary adenoma

Imaging of pituitary tumors: an update with the 5th WHO Classifications—part 1. Pituitary neuroendocrine tumor (PitNET)/pituitary adenoma

Fast MR Imaging of the Paediatric Abdomen with CAIPIRINHA-Accelerated T1w 3D FLASH and with High-Resolution T2w HASTE: A Study on Image Quality

Comparison of 3D Volumetric Subtraction Technique and 2D Dynamic Contrast Enhancement Technique in the Evaluation of Contrast Enhancement for Diagnosing Cushing's Disease

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