scholarly journals Assessing the relative benefits of imaging with plain radiographs and microCT scanning to diagnose cancer in past populations

2022 ◽  
Vol 36 ◽  
pp. 24-29
Author(s):  
Piers D. Mitchell ◽  
Jenna M. Dittmar ◽  
Bram Mulder ◽  
Sarah Inskip ◽  
Alastair Littlewood ◽  
...  
Keyword(s):  
Plain Radiographs

scholarly journals The Importance of Intraoperative Plain Radiographs during Cochlear Implant Surgery in Patients with Normal Anatomy

2021 ◽  
Vol 11 (9) ◽  
pp. 4144
Author(s):  
Ohad Cohen ◽  
Jean-Yves Sichel ◽  
Chanan Shaul ◽  
Itay Chen ◽  
J. Thomas Roland ◽  
...  
Keyword(s):  
Cochlear Implant ◽  
Electrode Array ◽  
Cost Effective ◽  
X Rays ◽  
Normal Anatomy ◽  
Electrode Arrays ◽  
Plain Radiographs ◽  
Hearing Function ◽  
Tertiary Center ◽  
Cochlear Implant Surgery

Although malpositioning of the cochlear implant (CI) electrode array is rare in patients with normal anatomy, when occurring it may result in reduced hearing outcome. In addition to intraoperative electrophysiologic tests, imaging is an important modality to assess correct electrode array placement. The purpose of this report was to assess the incidence and describe cases in which intraoperative plain radiographs detected a malpositioned array. Intraoperative anti-Stenver’s view plain X-rays are conducted routinely in all CI surgeries in our tertiary center before awakening the patient and breaking the sterile field. Data of patients undergoing 399 CI surgeries were retrospectively analyzed. A total of 355 had normal inner ear and temporal bone anatomy. Patients with intra or extracochlear malpositioned electrode arrays demonstrated in the intraoperative X-ray were described. There were four cases of electrode array malposition out of 355 implantations with normal anatomy (1.1%): two tip fold-overs, one extracochlear placement and one partial insertion. All electrodes were reinserted immediately; repeated radiographs were normal and the patients achieved good hearing function. Intraoperative plain anti-Stenver’s view X-rays are valuable to confirm electrode array location, allowing correction before the conclusion of surgery. These radiographs are cheaper, faster, and emit much less radiation than other imaging options, making them a viable cost-effective tool in patients with normal anatomy.

scholarly journals Comment on: An analysis of MRI and ultrasound imaging in patients with gout who have normal plain radiographs: reply

Rheumatology ◽  
2010 ◽  
Vol 49 (5) ◽  
pp. 1023-1024
Author(s):  
J. D. Carter ◽  
J. Valeriano ◽  
F. B. Vasey ◽  
L. R. Ricca
Keyword(s):  
Ultrasound Imaging ◽  
Plain Radiographs

Bone Cysts and Osteolysis in Ankle Replacement

2020 ◽  
pp. 107110072095515
Author(s):  
Ali-Asgar Najefi ◽  
Yaser Ghani ◽  
Andrew J. Goldberg
Keyword(s):  
Prevalence Study ◽  
Resection Margins ◽  
Bone Cysts ◽  
Ankle Arthritis ◽  
Level Of Evidence ◽  
Plain Radiographs ◽  
Computed Tomographic ◽  
Common Location ◽  
Postoperative Setting ◽  
End Stage

Background: Total ankle replacements (TARs) have higher rates of osteolysis than hip or knee replacements. It is unclear whether this is a pathologic immunologic process in response to wear debris, or expansion of pre-existing osteoarthritic bone cysts. We aimed to determine the incidence of bone cysts in patients with end-stage ankle arthritis prior to surgery and review the literature on bone cysts and osteolysis in relation to TAR. Methods: This is a descriptive/prevalence study in which all patients with end-stage ankle arthritis underwent plain radiographic imaging and computed tomographic (CT) scans prior to TAR surgery. Their imaging was assessed for the presence of cysts, measured on sagittal, axial, and coronal slices of the CT scan at the widest diameter. All cysts that would be removed as a result of the bone resection for the implant were excluded using digital analysis software. We assessed 120 consecutive patients with mean age of 63.4 years. Results: Seventeen patients (14%) did not have any bone cysts based on CT images. Ten patients (8%) had cysts that would have been completely removed by surgery, leaving 93 patients for analysis (78%). In 60% of these cases, the cysts were not seen on the plain radiographs. In 39 patients (33%), the cysts were greater than 5 mm in size. The medial (36%) and lateral malleoli (33%) were the most common location for the cysts (mean diameter 4.6±2.0 and 4.2±2.3 mm, respectively). Conclusion: Bone cysts outside of the resection margins for a TAR were present in 78% of patients with ankle arthritis prior to undergoing surgery. In 30% of cases, cysts were greater than 5 mm in size. In 60% of cases, the cysts were not seen on plain radiographs. Preoperative 3-dimensional imaging can provide a foundation to observe and quantify cyst presence, expansion, and time of onset in the postoperative setting. Level of Evidence: Level IIc, diagnostic/prevalence study.

Measurement of Calcaneal Angles and Its Clinical Significance in Han Chinese Adults in Northwest China

2021 ◽  
Author(s):  
Xianghui Dong ◽  
ZhanKui Jin ◽  
ZhengMing Sun ◽  
Jing Chen ◽  
YanHai Chang ◽  
...  
Keyword(s):  
Pearson Correlation ◽  
Age Groups ◽  
Han Chinese ◽  
Radiology Department ◽  
Reference Ranges ◽  
Chinese Adults ◽  
Mean Values ◽  
Plain Radiographs ◽  
Significant Difference ◽  
Ankle Joints

Abstract Objective We aimed to investigate differences in and trends of normal calcaneal angles among Han Chinese adults from different age groups to establish normal reference ranges of calcaneal angles in these age groups, thereby providing a theoretical basis and morphological reference for the treatment of calcaneal fractures. Methods We collected lateral plain radiographs (X-ray) of the normal ankle joints of 6,260 Han Chinese adults who visited the Radiology Department of Shaanxi Provincial People’s Hospital between November 2008 and December 2020 to measure the calcaneal angles, including the Böhler angle (BA), Gissane angle (GA), calcaneal pitch angle (CPA), posterior facet inclination angle (PFIA), and calcaneal-tibial angle (CTA). On this basis, we analyzed the calcaneal angles in different age groups to summarize the characteristics of normal calcaneal angles in Han Chinese adults. Results According to the lateral plain radiographs of the normal ankle joints of 6,260 (male: 3,380; female: 2,880) adults (mean age: 46.3 ± 18.2 ), the mean values of the BA, GA, CPA, PFIA, and CTA were 33.17° ± 6.08°, 114.99° ± 8.17°, 25.67° ± 4.72°, 64.35° ± 8.51°, and 91.59° ± 11.57°, respectively. Results of the Pearson correlation analysis suggested negative correlations between age and both BA and PFIA (P < 0.01, respectively) but a lack of correlation between age and the GA, CPA or CTA (P > 0.05, respectively). One-way analysis of variance (ANOVA) and the least significant difference (LSD) test showed that at above the age of 18, there were statistically significant differences both in the BA between different age groups and in the PFIA between different age groups above 41 years old. Conclusion In Han Chinese adults, there are significant differences in BA and PFIA between different age groups, with these calcaneal angles exhibiting a trend of decrease with age.

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