Publications by authors named "Shota Azane"
Article Synopsis
- Two patients with paroxysmal atrial fibrillation developed pulmonary vein stenosis (PVS) after AF ablation, with Case 1 being a female in her 50s and Case 2 a male in his 60s.
- The first patient showed high-degree left superior PVS 15 months post-ablation, while the second had progressive PVS nine months later, confirmed through contrast-enhanced CT and ventilation-perfusion scans.
- PVS is a rare complication of AF ablation that can lead to severe issues if untreated, and the case report emphasizes the importance of V/Q scans in assessing PVS despite its common association with pulmonary embolism evaluations.
In Ga-citrate scintigraphy (Ga-S), visual assessment is used by evaluating renal-uptake comparison with liver and spine and is simple and objective. We adopted the standardized uptake value (SUV) for Ga-citrate and proposed two quantitative indices, active nephritis volume (ANV) and total nephritis uptake (TNU). This study clarified the utility of new Ga-S-based quantitative indices in nephritis management.
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- Somatostatin receptor scintigraphy (SRS) with In-DTPA-DPhe-octreotide is key for managing neuroendocrine neoplasms, but precise quantification is lacking.* -
- This study analyzed 21 patients, calculating standardized uptake values (SUVs) for liver, kidney, and spleen to improve the assessment of neuroendocrine tumors (NETs) through a combination of visual scoring and quantitative analysis.* -
- Results showed significant correlations between higher SUVs and visual scores, confirming the utility of combined visual and quantitative methods for better lesion characterization and staging of NETs.*
Purpose: Amyloid light chain (AL) and transthyretin (ATTR) are the major subtypes of cardiac amyloidosis (CA). Tc-pyrophosphate (PYP) scintigraphy is used to differentiate ATTR from other CA subtypes. We adapted the standardized uptake value (SUV) for Tc-PYP and proposed two quantitative indices, amyloid deposition volume (AmyDV) and total amyloid uptake (TAU).
View Article and Find Full Text PDFObjective: The recommended start time for F-flutemetamol amyloid positron emission tomography (PET) examination is 60-120 min after F-flutemetamol injection, while an acquisition time of 10-30 min is generally recommended. We aimed to elucidate the effects of different examination conditions on image quality, diagnostic ability, and quantitative value of amyloid PET using F-flutemetamol.
Methods: We acquired data on a Discovery PET/computed tomography 710 scanner using Hoffman brain and pillar phantoms with 20 MBq of F for 30 min.
Objective: Dopamine transporter single-photon emission computed tomography (DAT SPECT) has been widely used to diagnose Parkinson syndrome. Using the standardized uptake value (SUV) of DAT SPECT, we propose "functional dopamine transporter volume (f-DTV)" as a new quantitative index to evaluate the three-dimensional volume of functional dopamine transporters and assess its diagnostic ability in differentiating dopaminergic neurodegenerative diseases (dNDD) from non-dNDD.
Methods: Seventy-nine patients were enrolled (42 dNDD, 37 non-dNDD; 38 men; age 24-88 years).