E-resources
Peer reviewed
Open access
-
Ai, Qi-Yong; King, Ann D.; Chan, Janet S. M.; Chen, Weitian; Chan, K. C. Allen; Woo, John K. S.; Zee, Benny C. Y.; Chan, Anthony T. C.; Poon, Darren M. C.; Ma, Brigette B. Y.; Hui, Edwin P.; Ahuja, Anil T.; Vlantis, Alexander C.; Yuan, Jing
European radiology, 10/2019, Volume: 29, Issue: 10Journal Article
Objectives MRI can detect early-stage nasopharyngeal carcinoma (NPC), but the detection is more challenging in early-stage NPCs because they must be distinguished from benign hyperplasia in the nasopharynx. This study aimed to determine whether intravoxel incoherent motion diffusion-weighted imaging (IVIM DWI) MRI could distinguish between these two entities. Methods Thirty-four subjects with early-stage NPC and 30 subjects with benign hyperplasia prospectively underwent IVIM DWI. The mean pure diffusion coefficient ( D ), pseudo-diffusion coefficient ( D *), perfusion fraction ( f ) and apparent diffusion coefficient (ADC) values were calculated for all subjects and compared between the 2 groups using Student’s t test. Receiver operating characteristics with the area under the curve (AUC) was used to identify the optimal threshold for all significant parameters, and the corresponding diagnostic performance was calculated. A p value of < 0.05 was considered statistically significant. Results Compared with benign hyperplasia, early-stage NPC exhibited a significantly lower D mean (0.64 ± 0.06 vs 0.87 ± 0.11 × 10 −3 mm 2 /s), ADC 0–1000 mean (0.77 ± 0.08 vs 1.00 ± 0.13 × 10 −3 mm 2 /s), ADC 300–1000 (0.63 ± 0.05 vs 0.86 ± 0.10 × 10 −3 mm 2 /s) and a higher D * mean (32.66 ± 4.79 vs 21.96 ± 5.21 × 10 −3 mm 2 /s) (all p < 0.001). No significant difference in the f mean was observed between the two groups ( p = 0.216). The D and ADC 300–1000 mean had the highest AUC of 0.985 and 0.988, respectively, and the D mean of < 0.75 × 10 −3 mm 2 /s yielded the highest sensitivity, specificity and accuracy (100%, 93.3% and 96.9%, respectively) in distinguishing early-stage NPC from benign hyperplasia. Conclusion DWI has potential to distinguish early-stage NPC from benign hyperplasia and D and ADC 300–1000 mean were the most promising parameters. Key Points • Diffusion-weighted imaging has potential to distinguish early-stage nasopharyngeal carcinoma from benign hyperplasia in the nasopharynx. • The pure diffusion coefficient, pseudo-diffusion coefficient from intravoxel incoherent motion model and apparent diffusion coefficient from conventional diffusion-weighted imaging were significant parameters for distinguishing these two entities in the nasopharynx. • The pure diffusion coefficient, followed by apparent diffusion coefficient, may be the most promising parameters to be used in screening studies to help detect early-stage nasopharyngeal carcinoma.
Shelf entry
Permalink
- URL:
Impact factor
Access to the JCR database is permitted only to users from Slovenia. Your current IP address is not on the list of IP addresses with access permission, and authentication with the relevant AAI accout is required.
Year | Impact factor | Edition | Category | Classification | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Select the library membership card:
If the library membership card is not in the list,
add a new one.
DRS, in which the journal is indexed
Database name | Field | Year |
---|
Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
---|
Source: Personal bibliographies
and: SICRIS
The material is available in full text. If you wish to order the material anyway, click the Continue button.