Journal: AJNR: American Journal of Neuroradiology

Article Title: The Utility of Diffusion-Weighted Imaging for Cholesteatoma Evaluation

doi: 10.3174/ajnr.A2129

Figure Lengend Snippet: Comparison of different DWI techniques. A, EPI DWI acquired in a patient undergoing evaluation for possible demyelinating disease. Abnormal DWI signal intensity in the right temporal bone (arrow) prompted further evaluation for cholesteatoma. The abnormal DWI signal intensity is clearly visible due to the large size of the lesion, but there are artifacts from the skull base. B, SS TSE (HASTE) DWI sequences obtained in a patient with obscured visual examination due to postoperative changes. Increased diffusion signal intensity is seen in the right middle ear and mastoid defect (arrow), with cholesteatoma confirmed at surgery. C, Multishot TSE DWI (BLADE) image in a patient with otoscopic examination obscured by cartilaginous reconstruction shows increased DWI signal intensity (arrow) in the left epitympanum, with cholesteatoma confirmed at surgery. D, The multishot TSE DWI has the additional advantage of generating images in a coronal plane, which can be especially useful when erosion of the tegmen tympani and/or intracranial extension is suspected. Arrow indicates increased DWI in the left epitympanum. Fig. 1B was reproduced with permission from Ear, Nose & Throat Journal (Schwartz KM, Lane JI, Neff BA, et al. Diffusion-weighted imaging for cholesteatoma evaluation. 2010;89:E14-19).32

Article Snippet: When applying DWI to the evaluation of cholesteatoma, investigators have used a variety of techniques ranging from traditional spin-echo EPI-based to TSE-based techniques such as HASTE and BLADE (Siemens, Erlangen, Germany).

Techniques: Diffusion-based Assay, Imaging

Journal: European Radiology Experimental

Article Title: Quantitative brain T1 maps derived from T1-weighted MRI acquisitions: a proof-of-concept study

doi: 10.1186/s41747-024-00517-2

Figure Lengend Snippet: T1 value (obtained with the MP2RAGE measurements) as a function of signal intensity in T1-weighted TSE image for NiCl 2 (black circles) and MnCl 2 (white circles) tubes from the phantom obtained on the Canon scanner ( a ) and the Philips scanner ( b ). The red curve represents a power regression, and dotted red curves represent the 95% confidence interval. Vertical and horizontal error bars correspond to standard deviations on the T1 values and signal intensity values measured in regions of interest in the tubes. MP2RAGE, Magnetization prepared 2 rapid acquisition gradient-echoes; TSE, Turbo spin-echo

Article Snippet: TSE, Turbo spin-echo Fig. 4 TSE-derived T1 values versus reference T1 values obtained from MP2RAGE acquisitions for NiCl 2 (black circles) and MnCl 2 (white circles) tubes from the phantom obtained on the Canon scanner ( a ) and the Philips scanner ( b ).

Techniques:

Journal: European Radiology Experimental

Article Title: Quantitative brain T1 maps derived from T1-weighted MRI acquisitions: a proof-of-concept study

doi: 10.1186/s41747-024-00517-2

Figure Lengend Snippet: a TSE image corresponding to the phantom central plate. b Corresponding T1 map derived from the TSE acquisition. TSE, Turbo spin-echo

Article Snippet: TSE, Turbo spin-echo Fig. 4 TSE-derived T1 values versus reference T1 values obtained from MP2RAGE acquisitions for NiCl 2 (black circles) and MnCl 2 (white circles) tubes from the phantom obtained on the Canon scanner ( a ) and the Philips scanner ( b ).

Techniques: Derivative Assay

Journal: European Radiology Experimental

Article Title: Quantitative brain T1 maps derived from T1-weighted MRI acquisitions: a proof-of-concept study

doi: 10.1186/s41747-024-00517-2

Figure Lengend Snippet: TSE-derived T1 values versus reference T1 values obtained from MP2RAGE acquisitions for NiCl 2 (black circles) and MnCl 2 (white circles) tubes from the phantom obtained on the Canon scanner ( a ) and the Philips scanner ( b ). The red curve represents a linear regression. Vertical and horizontal error bars correspond to standard deviations on the T1 values measured in regions of interest in the tubes. MP2RAGE, Magnetization prepared 2 rapid acquisition gradient-echoes; TSE, Turbo spin-echo

Article Snippet: TSE, Turbo spin-echo Fig. 4 TSE-derived T1 values versus reference T1 values obtained from MP2RAGE acquisitions for NiCl 2 (black circles) and MnCl 2 (white circles) tubes from the phantom obtained on the Canon scanner ( a ) and the Philips scanner ( b ).

Techniques: Derivative Assay

Journal: European Radiology Experimental

Article Title: Quantitative brain T1 maps derived from T1-weighted MRI acquisitions: a proof-of-concept study

doi: 10.1186/s41747-024-00517-2

Figure Lengend Snippet: TSE-derived T1 values as a function of distance to the center of the phantom for CuSO 4 tubes. Vertical error bars correspond to standard deviations on the T1 values. TSE, Turbo spin-echo

Article Snippet: TSE, Turbo spin-echo Fig. 4 TSE-derived T1 values versus reference T1 values obtained from MP2RAGE acquisitions for NiCl 2 (black circles) and MnCl 2 (white circles) tubes from the phantom obtained on the Canon scanner ( a ) and the Philips scanner ( b ).

Techniques: Derivative Assay

Journal: European Radiology Experimental

Article Title: Quantitative brain T1 maps derived from T1-weighted MRI acquisitions: a proof-of-concept study

doi: 10.1186/s41747-024-00517-2

Figure Lengend Snippet: a Three-dimensional T1-weighted TSE image acquired from healthy volunteer #1. b The T1 map derived from the TSE image. c a MP2RAGE T1 map obtained at the same position. MP2RAGE, Magnetization prepared 2 rapid acquisition gradient-echoes; TSE, Turbo spin-echo

Article Snippet: TSE, Turbo spin-echo Fig. 4 TSE-derived T1 values versus reference T1 values obtained from MP2RAGE acquisitions for NiCl 2 (black circles) and MnCl 2 (white circles) tubes from the phantom obtained on the Canon scanner ( a ) and the Philips scanner ( b ).

Techniques: Derivative Assay

Journal: European Radiology Experimental

Article Title: Quantitative brain T1 maps derived from T1-weighted MRI acquisitions: a proof-of-concept study

doi: 10.1186/s41747-024-00517-2

Figure Lengend Snippet: Mean and standard deviation of T1 values for four healthy volunteers obtained from three-dimensional T1-weighted TSE acquisitions in brain regions: occipital and frontal WM, frontal GM, and CSF

Article Snippet: TSE, Turbo spin-echo Fig. 4 TSE-derived T1 values versus reference T1 values obtained from MP2RAGE acquisitions for NiCl 2 (black circles) and MnCl 2 (white circles) tubes from the phantom obtained on the Canon scanner ( a ) and the Philips scanner ( b ).

Techniques: Standard Deviation

Journal: European Radiology Experimental

Article Title: Quantitative brain T1 maps derived from T1-weighted MRI acquisitions: a proof-of-concept study

doi: 10.1186/s41747-024-00517-2

Figure Lengend Snippet: a 3D T1-weighted TSE image acquired from the patient with brain metastases. b Corresponding T1 map before the administration of the Gd-based nanoparticles. c 3D T1-weighted TSE image. d Corresponding T1 map derived from TSE images 1 h after the administration of the gadolinium-based nanoparticles. a – d Pink arrows are pointing at the two brain metastases. e Gd 3+ concentration map derived from the pre- and post-injection T1 maps. f 3D whole-brain visualization of Gd 3+ concentrations into metastases obtained using 3D TSE T1-weighted acquisitions in the patient. 3D, Three-dimensional; TSE, Turbo spin-echo

Article Snippet: TSE, Turbo spin-echo Fig. 4 TSE-derived T1 values versus reference T1 values obtained from MP2RAGE acquisitions for NiCl 2 (black circles) and MnCl 2 (white circles) tubes from the phantom obtained on the Canon scanner ( a ) and the Philips scanner ( b ).

Techniques: Derivative Assay, Concentration Assay, Injection

Journal: Veterinary Surgery

Article Title: Preliminary evaluation of an osteochondral autograft, a prosthetic implant, and a biphasic absorbable implant for osteochondral reconstruction in a sheep model

doi: 10.1111/vsu.13373

Figure Lengend Snippet: MRI views in T2 TSE (A‐C) and T1 TSE (D) sequences. A, The prosthetic SynACART implant (←) is visible in all contrasts associated with significant edema in the epiphysis trabecular bone (*). B, Receiver site filled with the osteochondral autograft (←) with a slight subsidence of the transplant and some cavities in the transplant subchondral bone. C,D, The corresponding donor site filled with the biphasic construct (*) is visible in T2 TSE (C) and T1 TSE (D) weighted images. The two images allow the assessment of the congruity of the newly formed cartilage surface deemed satisfactory (→). Remaining calcium phosphate granules are still visible

Article Snippet: T1 3D Vibe, T1 TSE, and T2 TSE sequences (Magnetom Essenza 1.5T; Siemens, Munich, Germany) were used for MRI examination.

Techniques: Construct