Is C‐11 Methionine PET an alternative to 18‐F FDG PET for identifying recurrent laryngeal cancer after radiotherapy?

Clinical Otolaryngology, Volume 0, Issue ja, -Not available-.


https://ift.tt/2CGQzRQ

Agminated Blue Nevus with a GNAQ mutation: A Case Report and Review of the Literature

Journal of Cutaneous Pathology, Volume 0, Issue ja, -Not available-.


https://ift.tt/2yhxQZv

The expression of terminal deoxynucleotidyl transferase and paired box gene 5 in Merkel cell carcinomas and its relation to the presence of Merkel cell polyomavirus DNA

Journal of Cutaneous Pathology, Volume 0, Issue ja, -Not available-.


https://ift.tt/2yxGTok

Is CD1a useful for Leishmaniasis diagnosis in the new world?

Journal of Cutaneous Pathology, Volume 0, Issue ja, -Not available-.


https://ift.tt/2yfnx8f

Acquired Perforating Calcific Collagenosis in a Drug Addict with Rhabdomyolysis and Transient Hypercalcemia

Journal of Cutaneous Pathology, Volume 0, Issue ja, -Not available-.


https://ift.tt/2yzCl0z

Accuracy of hydrocortisone dose administration via nasogastric tube

Clinical Endocrinology, Volume 0, Issue ja, -Not available-.


https://ift.tt/2OkcaFY

Comparability of dental implant site ridge measurements using ultra-low-dose multidetector row computed tomography combined with filtered back-projection, adaptive statistical iterative reconstruction, and model-based iterative reconstruction

Abstract

Objective

To assess the linear measurements of edentulous ridges recorded from multidetector row computed tomography (MDCT) images obtained by a previously untested ultra-low dose in combination with filtered back-projection (FBP), adaptive statistical iterative reconstruction (ASIR), and model-based iterative reconstruction (MBIR).

Methods

Three cadavers were imaged using a reference protocol with a standard dose and FBP (volume CT dose index (CTDIvol): 29.4 mGy) and two ultra-low-dose protocols, LD1 and LD2 (CTDIvol: 0.53 and 0.29 mGy). All test examinations were reconstructed with FBP, ASIR 50, ASIR 100, and MBIR. Linear measurements from the images of the edentulous ridges recorded from the test protocols were compared with those from the reference using a one-sample t test, Bland–Altman plots, and linear regression. Statistical significance was set at a p value of 0.05.

Results

The one-sample t test demonstrated a statistically significant difference between the measurements from the reference protocol and all test protocols. The difference was not clinically significant for the following three test protocols: LD1/FBP, LD1/ASIR 50, and LD2/FBP. Bland–Altman plots with linear regression showed no systematic variation between the measurements obtained with the reference protocol and these three test protocols.

Conclusions

The lowest-dose protocol to demonstrate comparable measurements with a standard MDCT dose was CTDIvol 0.29 mGy with FBP. These results must be considered with caution for areas of the jaws with thin cortication. The results in areas of thin cortication should be verified by studies with larger sample sizes at such areas and comparison with true gold standard measurements.

https://ift.tt/2ynTU4L