What's the difference between elusive and phantom?

Elusive


Definition:

  • (a.) Tending to elude; using arts or deception to escape; adroitly escaping or evading; eluding the grasp; fallacious.

Example Sentences:

  • (1) The successful treatment of the painful neuroma remains an elusive surgical goal.
  • (2) Diagnostic difficulties were encountered due to the rarity of such infections and elusive identification of the organism with routine laboratory procedures.
  • (3) Diagnosis with light microscopy can be elusive; electron microscopic and immunohistochemical evaluation are necessary to confirm the pathological condition.
  • (4) But an agreement looks elusive, and it appears that another election will be held soon.
  • (5) Effectiveness and safety of other molecules remain elusive.
  • (6) Thus, the identity of the suppressive factor(s) in cultured I-CB cell supernatants remains elusive.
  • (7) The quality of family life is as elusive a concept as is quality of life for the individual.
  • (8) In the United States, early diagnosis and cure of gastric carcinoma remain elusive.
  • (9) Despite their functional prominence, the structural requirements of fully functional GABAA-receptors are still elusive.
  • (10) The explanation for this dramatic loss of GSH has been investigated by many laboratories but the solution has been elusive.
  • (11) While the etiology and pathogenesis of such lesions remain elusive, physicians performing hair transplantations should be aware of this potential sequela.
  • (12) Les Cafeteras began the second half in similarly determined mode and the elusive Rincón sent a shot dipping fractionally over the bar from distance.
  • (13) Never before has so much been learned about the molecular biology of a virus in such a short time since its discovery and yet effective strategies for fighting the human immunodeficiency virus that causes AIDS remain elusive.
  • (14) With her first book, Girl Online, due out in November and an audience estimated to be 26 times that of the circulation of British Vogue, Zoella is a key example of what the advertising world call a “crowdsourced people’s champion” – one who earns hundreds of thousands of pounds a year and is paid by brands such as Unilever to connect with the ever-elusive 18-30 demographic.
  • (15) We retrospectively reviewed the MR examinations of five patients with surgically proved cervical epidural abscess in order to assist in the diagnosis of this clinically elusive disorder.
  • (16) Steroid hormone receptors are elusive, labile regulatory proteins which communicate the action of the sex hormones, estrogens and progestins, in target organs such as the breast and uterus.
  • (17) However, the principles of optimal mAb selection remain elusive, as their efficacy in vivo does not always correlate with their characteristics in vitro.
  • (18) Bacterial endocarditis is an elusive disease that challenges clinicians' diagnostic capabilities.
  • (19) The chronic inflammatory diseases in humans have been intensively investigated, however the immune mechanisms underlying diseases such as rheumatoid arthritis (RA), inflammatory bowel disease, and periodontal disease (PD) remain elusive.
  • (20) Three years later, the proud owner of a PG diploma in housing studies and member of the Chartered Institute of Housing, I was offered the opportunity to complete a further year's study and obtain that elusive degree.

Phantom


Definition:

  • (n.) That which has only an apparent existence; an apparition; a specter; a phantasm; a sprite; an airy spirit; an ideal image.

Example Sentences:

  • (1) This is due to changes with energy in the relative backscattered electron fluence between chamber support and phantom materials.
  • (2) To know the relation between the signal intensity and sodium concentration, sodium concentration--signal intensity curve was obtained using phantoms with various sodium concentrations (0.05-1.0%).
  • (3) This technique is compared with calculated outline and ring source attenuation correction techniques in a pie phantom.
  • (4) To evaluate image quality a perspex phantom with image quality test objects was used.
  • (5) The validity of the response of this probe to Y-90 and its clinical application were assessed with a phantom containing varying activities and with biopsy samples obtained from patients being treated with SIR therapy.
  • (6) Preliminary heating patterns studied in phantoms indicate the possibility of treating volumes greater than 2000 cm3 within the 50 per cent isotherm.
  • (7) With the addition of a preservative, the phantom could be used for experiments on heating, without degeneration, for over one year.
  • (8) Diffusion coefficients measured on images of water and acetone phantoms were consistent with published values.
  • (9) The incidence of phantom pain and nonpainful phantom sensations was 13.3% and 15.0%, respectively, 3 weeks after mastectomy, 12.7% and 11.8%, respectively, after a year, and 17.4% and 11.8%, respectively, after 6 years.
  • (10) Phantom studies simulating clinical conditions showed no significant difference in performance at 140 keV.
  • (11) In addition, normalized organ dose to the breast, active bone marrow, thyroid, eyes, ovaries, and testes were measured in a pediatric anthropomorphic phantom comparing the anteroposterior and posteroanterior projections.
  • (12) Studies carried out on the phantom have shown how reliable transverse diameter measurements of the pelvis are when carried out by X-Ray scanning pelvimetry compared with conventional X-Ray pelvimetry.
  • (13) A comparison is made between five irradiation methods, the dose distribution and volume doses of which had been ascertained by means of two phantoms presupposed differently large.
  • (14) Analysis of the penumbra width of cross dose distributions, as a function of field sizes, allowed us to postulate that the dmax shift could be due to the phantom scattered photons, which in turn were generated by the collimator scattered photons.
  • (15) The phantom combines an inhalation system which allows for the simulation of xenon buildup or washout in the arterial blood as well as a multisection translatable cylinder in which several sections can be scanned during a preselected protocol to simulate the CT enhancement in brain tissue during a study.
  • (16) The measurements show that the machine outputs are only slightly dependent on phantom size; the percentage depth dose distributions, however, are strongly dependent on the phantom size, suggesting that machine data for total body irradiations should be measured in phantoms whose dimensions approximate the patient during the total body irradiation.
  • (17) The Greeks could be delivering an answer to a phantom question.
  • (18) Quantitative analysis of MR images included fat signal fraction for animals, and relative signal decrease between in-phase and opposed-phase images for phantom and human data.
  • (19) Relative dose functions for 125I for these phantom media are fitted to second-degree polynomials.
  • (20) The supplied reference rods were scanned in different positions within the lung fields of the phantom and with varied chest wall thicknesses.