Neuroimaging of hypophysitis: etiologies and imaging mimics
AbstractHypophysitis is an inflammatory disease affecting the pituitary gland. Hypophysitis can be classified into multiple types depending on the mechanisms (primary or secondary), histology (lymphocytic, granulomatous, xanthomatous, plasmacytic/IgG4 related, necrotizing, or mixed), and anatomy (adenohypophysitis, infundibulo-neurohypophysitis, or panhypophysitis). An appropriate diagnosis is vital for managing these potentially life-threatening conditions. However, physiological morphological alterations, remnants, and neoplastic and non-neoplastic lesions may masquerade as hypophysitis, both clinically and radiologica...
Source: Japanese Journal of Radiology - April 3, 2023 Category: Radiology Source Type: research
Renal cryoablation combined with prior transcatheter arterial embolization in non-dialysis patients with stage 4 or 5 chronic kidney disease: a retrospective study
ConclusionCryoablation combined with TAE for RCC in non-dialysis patients with stage 4 or 5 CKD was effective and safe, with an acceptable impact on renal function. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - April 1, 2023 Category: Radiology Source Type: research
Deep learning-based detection of patients with bone metastasis from Japanese radiology reports
ConclusionThe proposed DL-based NLP model may help in the early and efficient detection of patients with BM. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 29, 2023 Category: Radiology Source Type: research
Evaluation of radiation dose reduction in head CT using the half-dose method
ConclusionThe HDM yielded diagnostically acceptable images. In addition, a change in protocol for only two diseases successfully reduced the patients ’ overall radiation exposure by approximately 15%. Introducing and optimizing the HDM for frequently performed target diseases will be useful in reducing the exposure dose for the hospital’s patient population. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 24, 2023 Category: Radiology Source Type: research
Correction to: Imaging of pituitary tumors: an update with the 5th WHO Classifications —part 1. Pituitary neuroendocrine tumor (PitNET)/pituitary adenoma
(Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 24, 2023 Category: Radiology Source Type: research
Four-dimensional quantitative analysis using FDG-PET in clinical oncology
AbstractPositron emission tomography (PET) with F-18 fluorodeoxyglucose (FDG) has been commonly used in many oncological areas. High-resolution PET permits a three-dimensional analysis of FDG distributions on various lesions in vivo, which can be applied for tissue characterization, risk analysis, and treatment monitoring after chemoradiotherapy and immunotherapy. Metabolic changes can be assessed using the tumor absolute FDG uptake as standardized uptake value (SUV) and metabolic tumor volume (MTV). In addition, tumor heterogeneity assessment can potentially estimate tumor aggressiveness and resistance to chemoradiotherap...
Source: Japanese Journal of Radiology - March 22, 2023 Category: Radiology Source Type: research
From pituitary adenoma to PitNET: it is time to discuss PitNET/pituitary adenoma
(Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 18, 2023 Category: Radiology Source Type: research
Follow-up Tc-99 m pyrophosphate cardiac scan for patients with transthyretin cardiac amyloidosis treated with tafamidis
ConclusionA decrease in H/CL ratio was found after tafamidis therapy in patients with ATTR-CA, albeit the magnitude of changes in the H/CL ratio ( ΔH/CL ratio) was not significantly different from that of patients without tafamidis therapy. Future study with larger population might be required to further clarify the effect of tafamidis therapy on myocardial uptake of Tc-99 m PYP.Clinical trial registrationNo clinical trial was conducted in our retrospective study. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 15, 2023 Category: Radiology Source Type: research
Utility of flow diverters in treatment of acutely ruptured uncoilable aneurysms of the posterior circulation of the brain
ConclusionThe procedure-related morbidity and mortality is not negligible. However, the risks and efficacy associated with FDs are acceptable, especially when adjunctive coiling is possible, given the lack of treatment alternatives. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 15, 2023 Category: Radiology Source Type: research
Imaging of pituitary tumors: an update with the 5th WHO Classifications —part 2. Neoplasms other than PitNET and tumor-mimicking lesions
AbstractMany types of tumors can develop in the pituitary gland. In the recently revised 5th editions of the World Health Organization (WHO) classifications (2021 WHO Classification of Central Nervous System Tumors and the 2022 WHO Classification of Endocrine and Neuroendocrine Tumors), various changes have been made to the tumors other than pituitary neuroendocrine tumor (PitNET)/pituitary adenoma, as well as PitNET. Adamantinomatous craniopharyngioma and papillary craniopharyngioma are now considered separate tumors in the 5th edition of the WHO classification. Tumors positive for thyroid transcription factor 1, a marker...
Source: Japanese Journal of Radiology - March 13, 2023 Category: Radiology Source Type: research
Radiologist expertise and responsibilities for off-label use of Urografin before the change in indication by medical health insurance
(Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 13, 2023 Category: Radiology Source Type: research
Writing medical papers using large-scale language models: a perspective from the Japanese Journal of Radiology
(Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 10, 2023 Category: Radiology Source Type: research
Bile duct penetrating duodenal wall sign: a novel computed tomography finding of common bile duct stone impaction into duodenal major papilla
ConclusionThe BPDS was a unique CT imaging finding to identify common bile duct stone impaction regardless of stone attenuation with high accuracy. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 9, 2023 Category: Radiology Source Type: research
Correction to: Transarterial fiducial marker implantation for CyberKnife radiotherapy to treat pancreatic cancer: an experience with 14 cases
(Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 9, 2023 Category: Radiology Source Type: research
Deep learning reconstruction with single-energy metal artifact reduction in pelvic computed tomography for patients with metal hip prostheses
ConclusionDLR-S provided better pelvic CT images in patients with metal hip prostheses than IR-S and DLR. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 2, 2023 Category: Radiology Source Type: research
