42 No evidence was called by the defendant to substantiate the assertion that poor positioning during exposure using the Soredex machine resulted in distortion and magnification. Nor was there evidence from the defendant that most machines will show magnification, let alone was there evidence from the defendant that the Siemens machine showed magnification.
43 Mr Favaloro asserted, both in his letter of 24 February 2005 to the plaintiff and in correspondence to the manufacturer in Finland, that patient positioning was incorrect. However, Mr Favaloro was not called and the matter rests with assertions to that effect in the defendant's correspondence. A person called Ritva Manner, at an entity called GE Health Care, asserted in email correspondence to Mr Favaloro that no panoramic unit gave true anatomical sizes and there was always a magnification in images. Again, no-one for the defendant was prepared to swear to that effect.
44 Counsel for the defendant submitted that the onus lay on the plaintiff to establish that the representation as to quality was misleading. That is undoubtedly correct. However, that does not mean that an evidentiary onus on particular issues may not pass to the defendant. Dr Preda gave evidence that about 25% of the referrals to the practice came from specialists who required images that showed teeth, the jaw and cranial areas of actual size. He said that the Siemens machine produced OPGs which did that. In cross-examination he acknowledged that there could be minute differences between pictures taken on different occasions attributable to different patient positioning. However, he said that the patient's position was fixed in such a way that, if done properly, the images were exactly reproducible.
45 It was said that Dr Preda lacked the necessary expertise to express such opinions. His evidence in his affidavit was not objected to on the ground that he lacked expertise to express the opinions which he did. In any event, his observations as to the size of images produced by the two machines was well within his expertise. It was also within his expertise to say what requirements for images were made known to the practice which he managed.
46 It was not always clear to me whether the defendant disputed that there was evidence that the Siemens machine produced images to the actual anatomical size of the patient. There were assertions to contrary effect in the defendant's correspondence. However, Dr Preda's evidence given on oath has not been contradicted, except by such statements in correspondence. His evidence has not been rebutted.
47 It is also clear that the Soredex images are magnified. Dr Preda deposed that on first analysing the films produced by the Soredex machine he found that they were not anatomically correct. The correspondence tendered by the defendant confirms that such magnification occurs and occurs independently of any operator error in the positioning of patients. The statements made by radiographers, who were employees in the practice responsible for producing (as distinct from interpreting) the image, on 16 February 2005 to Mr Mitchell to the effect that the films seemed okay do not displace the other evidence that the films produced by the Soredex machine were of a different size from the Siemens' images and did not exactly reproduce the size of the patients' facio-maxillary features.
48 The film produced by the Soredex machine is provided to a computer and the image shown on the computer monitor can be adjusted for shading by the radiographers. Dr Preda accepted that a radiographer could adjust the size of the image. However, there is no parameter by which the radiographer can determine what adjustment is needed to match the patient's actual size.
49 Accordingly, the question comes down to whether the size of the image produced by the Soredex machine is a part of its quality, in the sense in which the representation was made by Mr Hatfield. If the size of the image is part of the quality of the Soredex image, then the representation that the Soredex images had the same or similar quality to the Siemens' images was innocently untrue.
50 It was submitted that what was conveyed by the representation as to quality should be determined by the descriptions of the machines given in brochures which were provided to Dr Preda on 8 November 2004. Those brochures make no mention of the size of the image.
51 Mr Hatfield said that if Dr Preda was looking for images of a higher quality then he should consider the Cranex Tome, which was in the brochure he showed to Dr Preda in the first meeting. However, I do not consider that that incidental reference to the brochure conveyed that when Mr Hatfield was talking of the quality of the images, he was confining it to the features of the product referred to in the brochure. Dr Preda already had the brochure. Clearly he was asking for an assurance that went beyond what was stated in the brochure.
52 There is no doubt that in talking of the quality of the image, Mr Hatfield was referring to the clarity of the image. It does not follow that that was all that he was referring to. The question depends not on Mr Hatfield's subjective intentions but what, objectively considered, was conveyed by the words he used in the context in which he used them.
53 I was referred to a number of dictionary definitions of the meaning of the word "quality". In Given v CV Holland (Holdings) Pty Ltd (1977) 29 FLR 212 at 216; 15 ALR 439 at 442, Franki J adopted the following definition from the Shorter Oxford Dictionary applicable to the use of the word "quality" in relation to things, namely, "an attribute, property, special feature. The nature, kind or character (of something)". (See also Thompson v J T Fossey Pty Ltd (No 1) (1978) 20 ALR 496 at 501.
54 The dictionary definition in the Oxford English Dictionary which, to my mind is most apposite, is "an attribute, property, special feature or characteristic of a thing". I was referred by counsel for the defendant to another definition in which the word "quality" is defined as one of three Aristotelian categories, others being relation and quantity. I am quite sure that when Dr Preda and Mr Hatfield were discussing the images they did not have concepts of Aristotelian philosophy in mind. Be that as it may, I would have thought that in that sense, size was an attribute which was a quality of the thing.
55 I was also referred to the special use of the word "quality" cited in the Oxford English Dictionary in reference to radiology. It was there defined as the "penetrating power of a beam of x-rays". However, Mr Hatfield and Dr Preda were not discussing the quality of x-rays, but of the images produced by the machines through the use of x-rays.
56 In my view, the size of the image is an attribute, feature and characteristic of the films produced by the Soredex machine. It was submitted for the defendant that what fell within the concept of "quality" should be discerned from the use which can be made of the resulting images. With that I agree. In my view the features of the images which contribute to the usefulness of the images fall within the concept of the quality of the image.
57 It was then said that radiographers can adjust the scale of the image and that there is no evidence that the images produced by the Soredex machine do not have as much utility as the images produced by the Siemens machine. However, there is such evidence. Dr Preda said that a substantial proportion of OPG referrals from specialists, a proportion he estimated at 25%, were from specialists who required "anatomically correct images". By this he meant images which showed the teeth, the jaw and cranial areas of actual size. He said that these were used by surgeons and orthodontists to take accurate measurements of patients. Accordingly, on the basis of his evidence the size of the image and whether it accords exactly with the size of the patient's feature is an important attribute of the image and one which affects its utility. It is, in my view, part of the quality of the image.
58 For these reasons, I am of the view that by Mr Hatfield's confirming that the quality of the image would be the same as or similar to the Siemens' images without disclosing that there would be a degree of magnification, and without expressly confining the representation to one about the clarity of the image, he innocently misrepresented the features and hence the quality of the product. That representation induced Dr Preda to enter into the contract on behalf of the plaintiff.
59 The defendant commenced proceedings in the Local Court on 31 March 2005 claiming payment of the purchase price. On 6 June 2005, the plaintiff commenced proceedings in this court seeking a declaration that the contract was void pursuant to s 87 of the Trade Practices Act. Damages were sought in the alternative. Nonetheless it is clear from the summons which was filed, if it was not already clear, that the plaintiff regarded itself as not bound by the contract. The filing of the summons showed a clear intention not to be bound by the contract.
60 Subsequently, in April 2006, the plaintiff's solicitors wrote to the defendant's solicitors saying, "As you are aware our client seeks, inter alia, rescission of the contract ... ". They proposed that the machine which was sitting in the plaintiff's premises unused be taken by the defendant and sold, because they said it was probable that a higher price would be received if the machine was sold by the defendant. That offer was not taken up.
61 It is not suggested - and there is no evidence which would support the suggestion - that there was any bar to the plaintiff's rescinding the contract. It is possible to effect restitution. The plaintiff, I understand, is willing and would, I assume, provide an undertaking to the Court, to allow the defendant to remove the Soredex machine from its premises. The plaintiff has also offered undertakings to repay sums totalling $2,305.71 which, pursuant to the contract, the defendant paid for the cost of shielding the machine and for the cost of the cassettes to be used with it.
62 In my view, for these reasons, the appropriate orders are as follows: